* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            max-width: 120rem;
            margin: 0 auto;
            padding: 0 1rem;
        }
        a {
            color: #6a5acd;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #483d8b;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 75rem;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .site-header {
            background: linear-gradient(135deg, #8a2be2 0%, #6a5acd 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Comic Sans MS', cursive, sans-serif;
            font-size: 2.2rem;
            font-weight: bold;
            color: #fff;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo:hover {
            color: #ffd700;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: #fff;
            font-weight: 600;
            padding: 0.5rem 0;
            border-bottom: 3px solid transparent;
        }
        .nav-desktop a:hover,
        .nav-desktop a.active {
            color: #ffd700;
            border-bottom-color: #ffd700;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: #6a5acd;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            z-index: 999;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            padding: 0.8rem 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .nav-mobile a:hover {
            background-color: rgba(255,255,255,0.1);
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 1rem;
            border-radius: 0.5rem;
            margin: 1rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #6a5acd;
        }
        .breadcrumb span {
            color: #666;
        }
        main {
            background: white;
            padding: 2rem;
            border-radius: 1rem;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            margin: 2rem 0;
        }
        article {
            max-width: 70rem;
            margin: 0 auto;
        }
        h1 {
            font-size: 2.8rem;
            color: #4b0082;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #ffd700;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2.1rem;
            color: #6a5acd;
            margin: 2.5rem 0 1rem;
            padding-top: 1rem;
            border-top: 1px dashed #eee;
        }
        h3 {
            font-size: 1.6rem;
            color: #8a2be2;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #9370db;
            margin: 1.5rem 0 0.8rem;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            h4 { font-size: 1.2rem; }
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .intro {
            font-size: 1.2rem;
            color: #555;
            background-color: #f8f9ff;
            padding: 1.5rem;
            border-left: 4px solid #6a5acd;
            border-radius: 0 0.5rem 0.5rem 0;
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #fffacd;
            padding: 1.5rem;
            border-radius: 0.5rem;
            border-left: 5px solid #ffd700;
            margin: 2rem 0;
            font-weight: bold;
        }
        b, strong {
            color: #4b0082;
        }
        ul, ol {
            margin-left: 1.5rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .featured-image {
            width: 100%;
            max-width: 50rem;
            margin: 2rem auto;
            border-radius: 1rem;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            transition: transform 0.5s ease;
        }
        .featured-image:hover img {
            transform: scale(1.02);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 0.5rem;
            background-color: #f9f9f9;
        }
        .module {
            background: #f0f8ff;
            padding: 2rem;
            border-radius: 1rem;
            margin: 3rem 0;
            border: 1px solid #d6e4ff;
        }
        .module h3 {
            margin-top: 0;
            color: #4682b4;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 0.5rem;
            font-family: inherit;
            font-size: 1rem;
        }
        button, .btn {
            background: linear-gradient(to right, #6a5acd, #8a2be2);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 0.5rem;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, #5a4abc, #7a1bd2);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(106, 90, 205, 0.4);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            margin: 1rem 0;
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: #ffd700;
        }
        footer {
            background-color: #2c2c54;
            color: #ccc;
            padding: 3rem 0 2rem;
            margin-top: 3rem;
            border-radius: 1rem 1rem 0 0;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #ffd700;
            margin-bottom: 1rem;
            font-size: 1.2rem;
        }
        friend-link {
            display: block;
            color: #aaa;
            padding: 0.3rem 0;
        }
        friend-link:hover {
            color: #fff;
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #aaa;
        }
        .update-time {
            background-color: #e6f7ff;
            padding: 0.5rem 1rem;
            border-radius: 0.5rem;
            display: inline-block;
            margin: 1rem 0;
            font-size: 0.9rem;
            color: #0066cc;
        }